A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5985-01-182-4413
NSN 5975-00-499-0791
NSN 5960-01-325-2241
NSN 5960-00-617-8677
NSN 6650-01-113-7563
NSN 6145-01-011-3231
NSN 6320-01-172-6103
NSN 5935-00-575-1198
NSN 4140-01-482-2053
NSN 6320-01-371-3047
NSN 5960-00-170-6916
NSN 5960-00-099-9790